Hi dear!
I have a coir djinn from Lisa since a while, so I want to share my experiences even if they are not so yielding.
First, I rarely ask her for any wishes directly. Sometimes I ask my other djinns for specific things, but I often ask alle my spirits for solving a stressful situation. Up to now, all problems are gone with favorable endings for me. So, I don't know, who plays what role - but hey! Never change a running system ;-)
Sometimes I notice an accumulation of bad luck, when I did something, what was not okay. Don't know, if this is part of the coir djinns karma-thing. Never that worse, that I couldn't handle, most of the time only annoying and always solvable. What I can tell you is, that they definitely make a bump for rethinking some planned acts related to overlooked aspects with negative impacts.
I am not one of those lucky ones, who sees spritis, just some kinds of communications are possible. But I can tell you, that my coir djinn has a calming energy - kind of grounding. Very comfortable.
I hope, that I was in the positioon to answer a few of your questions
fell free to ask